PDF malware analysis — malicious · 4453689504a3346c

MALICIOUS

PDF

34.3 KB Created: 2021-06-28 08:29:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04

MD5: 89f3a4ea4ab72a3ca982d4651f94432f SHA-1: 0fedb3d8323413acee71cf414b5e937c90240607 SHA-256: 4453689504a3346cf7ed04f2db1ff5faeffde5d43d1849f2c8f851e5bd1fa162

160 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The PDF document contains numerous embedded URLs and text referencing game cheats and hacks, strongly suggesting a lure to download malicious content. The ML classifier also flagged this PDF with high confidence. The primary IOC is the external URI pointing to a potential download site.

Machine Learning

Nyx PDF Classifier malicious score 0.9980

Heuristics 4

PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE

PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON

Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL http://netcdn.co/app/431946152/roblox-assassin-cheats-2021-game-hack In PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-robux-no-human-verification-or-password-roblox_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/www-coin-master-hack-tk_GM406889139.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-roblox-gift-card-codes-septemer-28-2021_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/how-to-get-minecraft-for-free-on-tablet_GM479516143.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/hacks-for-roblox-high-school-2_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/roblox-hax_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/gfun-games-to-hack-on-roblox_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/roebucks-on-roblox_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-2021-robux_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/freer-pro-tiktok_GM835599320.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/toolbox-for-mcpe_GM479516143.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/mcpe-com_GM479516143.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/free-bird-roblox-id_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/how-to-hack-people-accounts-in-roblox_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/coin-master-pc-hack-download_GM406889139.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/roblox-assassin-hack-2021_GM431946152.pdfIn PDF document text
- http://ellobo.com.ua/ckfinder/userfiles/files/roblox-robux-hack-2021-october_GM431946152.pdfIn PDF document text
- http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off00003190.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x3190	21296 bytes
SHA-256: `63a3e664b2edb87efa6c379be20dc7b50c1e84daaecb60852c712d99f1f5e7b8`
`font_01_sfnt_off00005ffd.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x5FFD	19276 bytes
SHA-256: `bf7f3cfe65b49db58b290c080f697e3ddb98222e2671662a8b1a8ef9754c9acd`

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